subnet.im

Allocated but unannounced space

Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.

“Unannounced” does not mean “unused”

Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.

It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.

Browse by registry

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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

25,269 blocks match, ordered by prefix.

Allocated but unannounced blocks, 901 to 950 of 25269
PrefixAddressesRegistryCountryAllocated
163.110.0.0/15131kRIPE NCCFR1st Apr 2005
163.112.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.113.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.114.146.0/23512RIPE NCCFR1st Apr 2005
163.114.148.0/221kRIPE NCCFR1st Apr 2005
163.114.152.0/221kRIPE NCCFR1st Apr 2005
163.114.156.0/23512RIPE NCCFR1st Apr 2005
163.114.158.0/24256RIPE NCCFR1st Apr 2005
163.114.160.0/198.2kRIPE NCCFR1st Apr 2005
163.115.0.0/1732.8kRIPE NCCFR1st Apr 2005
163.115.128.0/1816.4kRIPE NCCFR1st Apr 2005
163.115.192.0/1816.4kRIPE NCCFR1st Apr 2005
163.120.128.0/1732.8kRIPE NCCUS20th Jul 1992
163.163.0.0/1665.5kRIPE NCCBE27th Aug 1992
163.168.0.0/1665.5kRIPE NCCCH7th Sept 1992
163.169.0.0/1665.5kRIPE NCCGB8th Sept 1992
163.175.0.0/1665.5kRIPE NCCNL26th Oct 1992
163.242.0.0/1665.5kRIPE NCCDE1st Sept 1993
163.64.0.0/15131kRIPE NCCFR1st Apr 2005
163.67.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.70.0.0/1732.8kRIPE NCCFR1st Apr 2005
163.71.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.72.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.76.0.0/1732.8kRIPE NCCFR1st Apr 2005
163.77.0.0/1732.8kRIPE NCCFR1st Apr 2005
163.78.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.79.0.0/1732.8kRIPE NCCFR1st Apr 2005
163.79.128.0/1732.8kRIPE NCCUS1st Apr 2005
163.80.0.0/121MRIPE NCCFR1st Apr 2005
163.96.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.97.0.0/1665.5kRIPE NCCFR1st Apr 2005
163.98.0.0/15131kRIPE NCCFR1st Apr 2005
164.1.0.0/1665.5kRIPE NCCFR18th Sept 1992
164.12.0.0/1665.5kRIPE NCCUS2nd Nov 1992
164.13.0.0/1665.5kRIPE NCCFI4th Nov 1992
164.135.0.0/1665.5kRIPE NCCSE14th Oct 1993
164.138.202.0/24256RIPE NCCIR10th Jul 2025
164.142.0.0/1665.5kRIPE NCCIT18th Feb 1994
164.153.24.0/221kRIPE NCCGB14th Feb 2019
164.177.184.0/212kRIPE NCCUS21st Nov 2011
164.34.0.0/1665.5kRIPE NCCDE22nd Sept 1992
164.35.0.0/1665.5kRIPE NCCBE20th Oct 1992
164.37.112.0/204.1kRIPE NCCSE31st Jan 1993
164.37.128.0/1816.4kRIPE NCCSE31st Jan 1993
164.37.32.0/221kRIPE NCCSE31st Jan 1993
164.37.36.0/23512RIPE NCCSE31st Jan 1993
164.37.40.0/24256RIPE NCCIS31st Jan 1993
164.37.41.0/24256RIPE NCCGB31st Jan 1993
164.37.42.0/24256RIPE NCCDE31st Jan 1993
164.37.48.0/221kRIPE NCCSE31st Jan 1993